さらさ
type: MusicGroup
popularity: 2
followers: 19
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe9af9bc788a24249f8a368d2c9ad476359697aa4e2f515ac2c6f09baf93ecdd5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953860
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953860
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0377eb86-e0b0-42bb-aa7b-1d07ed32c9b9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0377eb86-e0b0-42bb-aa7b-1d07ed32c9b9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0377eb86-e0b0-42bb-aa7b-1d07ed32c9b9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:55:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe9af9bc788a24249f8a368d2c9ad476359697aa4e2f515ac2c6f09baf93ecdd5","name":"さらさ","registered_at":"2026-06-15T14:40:37Z","symbol":"NIM0739891","token_address":"0xf41d6f1d405f442393dfb9cbcfdaf36bbe66b909","type":"artist","uuid":"0377eb86-e0b0-42bb-aa7b-1d07ed32c9b9"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9af9bc788a24249f8a368d2c9ad476359697aa4e2f515ac2c6f09baf93ecdd5. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0377eb86-e0b0-42bb-aa7b-1d07ed32c9b9.json and https://artists.proofprofile.net/proofs/artist/0377eb86-e0b0-42bb-aa7b-1d07ed32c9b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T23:55:46Z
  text: {"copyright_id":"0xe9af9bc788a24249f8a368d2c9ad476359697aa4e2f515ac2c6f09baf93ecdd5","name":"さらさ","registered_at":"2026-06-15T14:40:37Z","symbol":"NIM0739891","token_address":"0xf41d6f1d405f442393dfb9cbcfdaf36bbe66b909","type":"artist","uuid":"0377eb86-e0b0-42bb-aa7b-1d07ed32c9b9"}